205066197 has 24 divisors (see below), whose sum is σ = 339073280. Its totient is φ = 116989920.

The previous prime is 205066181. The next prime is 205066219. The reversal of 205066197 is 791660502.

205066197 is a `hidden beast` number, since 2 + 0 + 506 + 61 + 97 = 666.

It is not a de Polignac number, because 205066197 - 2⁴ = 205066181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205066157) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42372 + ... + 46962.

Almost surely, 2^205066197 is an apocalyptic number.

It is an amenable number.

205066197 is a deficient number, since it is larger than the sum of its proper divisors (134007083).

205066197 is a wasteful number, since it uses less digits than its factorization.

205066197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5313 (or 5310 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 205066197 is about 14320.1325762019. The cubic root of 205066197 is about 589.7003141438.

The spelling of 205066197 in words is "two hundred five million, sixty-six thousand, one hundred ninety-seven".